Frame for stringed musical instruments



Feb. 22, 1927.

A. EILERT FRAME FOR STRINGED MUSICAL INSTRUMENTS Filed Oct. 12, 1925Patented Feb. 2 2, 1927.

ADOLF EILERT, OF BRUNSWICK, GERMANY.

FRAME FOR STRINGED MUSICAL INSTRUMENTS.

Application filed October 12, 1925, Serial No. 62,151, and in GermanyApril 25, 1925.

My invention relates to improvements in frames for stringed musicalinstruments, and

a the object of the improvements is to provide a frame in which thestrength of the tuning plank as against bending stresses is large ascompared to its cross-section, and in I which the number of thesupporting means for the said tuning plank may be reduced,

' the said tuning plank being supported in some cases exclusively at itsends. Another object Of'tllG'lIIlPIOVBlUBDtS is to provide a frame thewooden tunin plank of which is V a l proof as agalnst atmosphericlnfiuences,

' which is important forexample when ship- "left in Fig. 1,

ping the instrument such as a piano to tropic-countries. With these obects in view through which'the tuning pins are screwed into the .woodenpart of the plank.

For the purpose of explaining the invention an example en'ibodying the.same has been shown in the accompanying drawing, in which the samereference characters have been used in all the vlews to indicate corre-Y spending parts. In said drawing,

Fig. 1, is an elevation showing the frame and the sounding board carriedthereby,

I Fig. 2, IS an end view looking from the Fig. 3, is a sectional viewtaken on the f 1ine33 of Fig. 1, and

Fig. 1, is a perspective view showing one of the corners of the, frame.

In the example shown in the drawing the frameconsists of side members aand 7) and bracesc and cl connecting the said side 1119m i I the stringsthereto, the side members a and I 'bers and provided with pins forattaching portions it through which the tuning pins i are screwed intothe wood part 7. Below the said cut-out portions bridges made from brassor another suitable metal are ixed to the jacket g. The sounding boardm, which in the example shown in the figures is in the form of a box, issecured to the frame in any known or preferred way.

In most cases the strength of my improved tuning plank is sufficient totake up the tension of the strings n when being freely supportedexclusively at its ends. But in some cases I provide a bracing member 0fixed with one end to the jacket 9 and with its opposite end to the sidemember a.

I claim:

1. A frame for stringed musical instruments comprising a body having abottom member and two side members, and means securing the upper ends ofsaid side members to each other to complete said frame, said meanscomprising a wooden tuning plank, and a metal jacket enclosing saidtuning plank. I

2. A frame as set forth in claim 1, wherein the metal jacket enclosingsaid tuning plank is cut away to expose the tuning plank at points wheretuning pins are to be secured thereto. 7

In testimony whereof, I aflix my signature.

' ADOLF ELLER'I.

